Ticking Noise?

[sgearyman]

My 04 CS has developed a new issue, anyone have any ideas with this...

When the engine is started and running, doesn't matter if its started fresh or has been running hard for an hour, there is a distinct sharp ticking noise, very rapid, that sounds like its coming out of the throttle body on the top front of the motor.

I have been through the threads and heard the various postings of the dreaded scored cylinder wall or slapping pistons, this sounds nothing like that, this is a sharp ticking noise and its not coming from the cylinders. Near as I can tell the noise is coming from the top center of the motor from or around the throttle body or even right below.

its not loud either, you can only hear it if you open the hood and lean in. No faults, No engine light, some very very small rough idling when coming to a stop sometimes but runs ok, no burning oil, no leaks as far as I can tell anywhere.

im stumped, 75K miles and I know its overdue for service. I am going to change coils, plugs, oil and filters soon so I wanna tackle this noise while I am doing that I just don't know where to start.

[scubatahiti]

I had the same concern until i listened to my 04 Touareg with 125K miles on it and it was making the same sound (just a little quieter). I think it is just the sound of the engine but I am no expert. Mine runs great and is so responsive to my right foot :cheers:

Edited January 30, 2014 by scubatahiti

[gbratk]

I think it could be purge valve.

[sgearyman]

I was leaning toward that gbratk but I am no mechanic that is for sure. Love this car but its gonna kill me lol

[gbratk]

Lift up plastic on top of the throttle body, and you'll see, hear, and feel ticking of that valve if you put hand on it.